Prx (#12525)
* rename photon to prx
* rename photon into prx
* Revert .gitignore to state before commit b7fb0fe9d63bf766bbe3c42ac154a043796dd370
* rename photon to prx
* rename photon into prx
* Revert .gitignore to state before commit b7fb0fe9d63bf766bbe3c42ac154a043796dd370
* make fix-copies
